Multi-function ecological exterior wall and preparation method therefor

A method for preparing a multifunctional ecological exterior wall, comprising:

• step 1:
• preparing a ceramic thermal insulation waterproof board as a ceramic thermal insulation waterproof layer;
• step 2:
• preparing a ceramic sound-absorbing board as a sound-absorbing layer;
• step 3:
• installing an ecological exterior wall:
• step 3.1:
• leveling a surface of the wall of a building with cement slurry, and applying a cement bonding layer thereon;
• step 3.2:
• laying the ceramic thermal insulation waterproof board on the cement bonding layer in step 3.1, and applying the cement bonding layer on the ceramic thermal insulation waterproof board;
• step 3.3:
• laying at least two rows of the ceramic sound-absorbing boards which are arranged in parallel along the direction parallel to the ground and laid adjacent to each other in sequence on the cement bonding layer in step 3.2, and reserving a gap of 3 cm to 5 cm between the ceramic sound-absorbing boards of each floor of a building, which is used to place a water discharging component for adjusting humidity and temperature;
• step 3.4:
• driving a screw-thread steel bolt from the surface of the ceramic sound-absorbing board into the wall obliquely;
• step 3.5:
• installing the water discharging component comprising a pipe made of PVC or a galvanized material in the gap reserved at the upper of the ceramic sound-absorbing board;
• and
• step 3.6:
• planting a green plant on the surface of the ceramic sound-absorbing board.